{
  "date": "2026-10-19",
  "status": "Qualified floating window distinct membership plus independent complete CUMULATE partial merges; user functions excluded.",
  "native": "release+mimalloc",
  "jdk": 17,
  "parallelism": 2,
  "heap_gib": 2,
  "timezone": "UTC",
  "hardware": "Intel Core i7-12650H, Linux/WSL",
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  "actual_previous_commit": "54f56699e3e8decc20427c14abdd866d4c3a2876",
  "source_provenance": {
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        "src/test/java/tech/streamfusion/FlinkWindowFloatingDistinctSqlHarnessTest.java": "1e1f10c274a838556e3a4b5241d58e45a74c9e8c96e83d694694335ef9bf666f",
        "src/test/java/tech/streamfusion/FlinkWindowCountDistinctSqlHarnessTest.java": "7e064899a7e6d3c1f4fdc23e34c7b9c791a98476775ccb7284d58ba1ad8ea64d",
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        "src/test/java/tech/streamfusion/WindowBasicTypeBenchmark.java": "2ebd1849d4c674e95b13ac60650986f9253a001a07ed43f849392073e6069f52"
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      "reason": "Final prefix correction isolates already-complete attached CUMULATE ends when stride equals maximum size. Shared storage/checkpoint layout retained. Original160 profiles use split=false and ordinary CUMULATE step<size or other shapes; new190 total adds final-DLL default control and split path stock/current/actual-prior."
    },
    "explanation": "Original160 jobs measured the membership extension before a subsequently discovered generic attached-CUMULATE prefix correction. Those jobs have split=false and ordinary CUMULATE step<max or other shapes. Final30 jobs use the final library for a matched ordinary CUMULATE control and split-CUMULATE against stock and actual previous StreamFusion. No earlier job is relabeled as using the final library. S2 fixture adds only a default-false split flag and verifies both split global stages; data/resources remain identical."
  },
  "measurement": "Two interleaved engines,2warmups/3trials;runtime row source,rowwise blackhole,both transposes,production Arrow IPC exchange,JNI/state and nonempty native operator metrics retained. No concurrent local builds/tests/profiles/timings. Summary logs print means;artifact retains means,derived medians,ranges via full samples,and every warmup/trial.",
  "fixture": "CAST existing nullable BIGINT v to FLOAT/DOUBLE;1000 global integer slots,finite-valued timings. Source also constructs the unchanged existing row payload.500krows64keys;1MrowsonekeyDoubleHOPcontrol. Source timestamps cycle over5000milliseconds. Memory and one nativeRocksDBsample, fixed windows,SESSION and optional split-CUMULATE. NaNs,payloads,zeros,infinities,subnormals validated separately in native/released SQL tests.",
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    "java22_host_skips": 0,
    "java118_pass": 94,
    "java118_host_skips": 1,
    "new_sql_cases_each_release": 28,
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    "native_membership_unit_tests": 1,
    "native_window_regressions_including_new_complete_partial_restore": 75,
    "native_criterion_fixtures": 72,
    "details": "28SQL:12fixedphase/shape/filter,6legacywindowphase/shape,2SESSIONTVFavailabilitycontracts,6optionalSplitphase/shape,2mixedFloat/Double/intcanonicalbitCUMsplit two-restorememory/nativeRocks. Direct8 raw/canonicalbackend migrations cover both plain/distinct counts and native memory release. 72nativefixtures=60typedFloatCOUNTD+12realJVMcalendar complete-partial/checkpoint/late/Rocks/accounting cases. Existing51COUNTD and8boolean/time controls pass."
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  "allocation_boundary": "Final72 records exclude operator construction from allocation probes, matching the production update/merge/flush boundary;original60 diagnostic probes included setup. Neither is interpreted as copied bytes. Criterion setup stays outside timing in both source versions. JVM allocations are not counted by the Rust allocator.",
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    {
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    {
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    {
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      "sha256": "e0acffa2c28f08fcd20e85aed54ce33cd64d2fd9ea7212f322d9d42b2185da91"
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    {
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      "sha256": "d81fe4aaba8c2e875cfbf6540e1eaf506ba632ac989e154d834271326f53c3c1"
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      "sha256": "90138041e80d8f70baf7b4f4825d588cb12c35cab2545486aa292fef527c7f40"
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      "sha256": "3d42b3ea2fb860281e2502caecef65a10a730325742995c98a7874b553ceef08"
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  ],
  "limits": "Representative jobs,not universal speedup. Timings contain finite casts;NaN/zero semantics are correctness-covered. Fixed shapes sample alternating type/phase combinations,not the full matrix. Actual-prior controls sample TUMBLE,SESSION,nativeRocks and splitCUM;1.18 timing samples DoubleHOP. Legacy syntax and proctime are not separately timed. Source/library versions are preserved per profile;only final30 are final-library timings."
}